Because Internet

 Have you ever puzzled over how to punctuate a text message? Wondered where memes came from? Fret no more: Because Internet is the perfect book for understanding how the internet is changing the English language, why that's a good thing, and what our online interactions reveal about who we are.

'McCulloch is such a disarming writer - lucid, friendly, unequivocally excited about her subject - that I began to marvel at the flexibility of the online language she describes, with its numerous shades of subtlety.' New York Times.